There is little information to predict outcomes of leiomyoma therapies. It is clear that both environmental exposures and genetic predisposition influence disease manifestations. Our work has identified a new area of genetic linkage for leiomyomas from a genome wide scan. We therefore propose to prospectively collect biologic samples that will allow us to analyze gene/environment interactions of women enrolled in leiomyoma clinical trials or undergoing leiomyoma clinical treatments using the same methodology used previously. Specifically we will collect serum aliquots, genomic DNA and information using a genetic epidemiology questionnaire. In the short term we will also be able to use prospectively obtained information on epidemiologic and anthropomorphic data to characterize women undergoing treatment.